What engine does your 2004 and 2007 have? I found an article about the changes for the 2006 model year that included higher output headlamps and a revised suspension for better ride and less road noise. Have you noticed any improvements between the 2004 and the 2007? New engines were also added in 2006.Purchased a 2007 Monte Carlo - May 2007........ it is still currently my wife's daily driver with approximately 150k. It's been a reliable car up to this point, and I used to average around 30mpg when I drove it.(highway). In the city she is getting anywhere from 18-22mpg.
I also own a 2004 Monte Carlo that I purchased new with 180k on it. On the highway, I averaged over 32mpg and got as high as 38. (I track every tank of gas). That car is parked in my garage in Wisconsin and just used when one of us visits her parents. I most likely will sell that when our house sells..... don't have room for it here in AZ, plus I don't think it would pass emissions down here.
Both cars have been relatively trouble free..... regular maintenance, tires, brakes, exhaust, etc.
Thank you for sharing the information with me!here are the specs on both cars.
I didn't really notice a lot of difference between them... the 07 has a bit more power and the 04 has more comfortable seats.